US6491441B2 - Tapered bearing unit - Google Patents

Tapered bearing unit Download PDF

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Publication number
US6491441B2
US6491441B2 US09/518,332 US51833200A US6491441B2 US 6491441 B2 US6491441 B2 US 6491441B2 US 51833200 A US51833200 A US 51833200A US 6491441 B2 US6491441 B2 US 6491441B2
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US
United States
Prior art keywords
bearing
race
rollers
cages
outer race
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US09/518,332
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English (en)
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US20020054722A1 (en
Inventor
Angelo Vignotto
Francesco Savarese
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SKF Industrie SpA
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SKF Industrie SpA
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Filing date
Publication date
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Assigned to SKF INDUSTRIE S.P.A. reassignment SKF INDUSTRIE S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SAVARESE, FRANCESCO, VIGNOTTO, ANGELO
Publication of US20020054722A1 publication Critical patent/US20020054722A1/en
Application granted granted Critical
Publication of US6491441B2 publication Critical patent/US6491441B2/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/04—Preventing damage to bearings during storage or transport thereof or when otherwise out of use
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/34—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load
    • F16C19/38—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers
    • F16C19/383—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone
    • F16C19/385—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings
    • F16C19/386—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings for both radial and axial load with two or more rows of rollers with tapered rollers, i.e. rollers having essentially the shape of a truncated cone with two rows, i.e. double-row tapered roller bearings in O-arrangement
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/4605—Details of interaction of cage and race, e.g. retention or centring
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/46—Cages for rollers or needles
    • F16C33/4617—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages
    • F16C33/4623—Massive or moulded cages having cage pockets surrounding the rollers, e.g. machined window cages formed as one-piece cages, i.e. monoblock cages
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
    • F16C33/30—Parts of ball or roller bearings
    • F16C33/58—Raceways; Race rings
    • F16C33/60—Raceways; Race rings divided or split, e.g. comprising two juxtaposed rings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2326/00—Articles relating to transporting
    • F16C2326/01—Parts of vehicles in general
    • F16C2326/02—Wheel hubs or castors

Definitions

  • the present invention relates to a tapered roller bearing of the type defined in the preamble to claim 1 .
  • each of the two radially inner half-races 10 is formed with a step 11 close to the inner end which faces towards the centre of the bearing.
  • This step serves, during the transfer stages which precede assembly of the sub units comprising the sets of rollers 12 and associated cages 13 on respective inner half-races, and before insertion of these sub-units into the outer race 14 , to prevent the rollers from accidentally escaping from the rolling tracks in the direction indicated by the arrows A and A′ in FIG. 1 .
  • the formation of the above-mentioned step involves a first disadvantage in that its shape, projecting radially from the rolling plane of the rollers, requires the provision of excess metal of a significant thickness t on the forged blank race, the outline of which is indicated in broken outline in FIG. 2 . Moreover, it takes a long time for the significant mass of material constituting the excess metal to be removed by turning and grinding operations (proportional to the quantity of excess metal to be removed); in addition, the weight of the forged blank is detrimentally effected by the excess metal part. This known technique is therefore disadvantageous from a productive point of view, relating both to the working time taken for finishing and the weight of the component, which detrimentally influences the transfer operations.
  • the said step involves a second disadvantage in that, to complete an inner half-race, the sub-unit comprising the preliminarily assembled rollers in their cage must be fitted onto the half-race by passing them over the step; this subunit is assembled by pressing the rollers and the cage in the opposite directions from those indicated by the arrows A and A′ in FIG. 1 .
  • the shape which is impressed in the stamping phase of the forging corresponds substantially to the shape of the finished product which is obtained subsequently by working, that is turning and grinding, the blank workpiece.
  • the presence of the step makes the conical surfaces C and C′ of the stamped blank and the finished piece respectively are not parallel. In the grinding operation, therefore, a surface (C′) is formed which is orientated differently from the surface (C) which was formed by stamping.
  • the inner cylindrical surface of the half-races is further worked in such a way as to form retaining grooves 16 for a temporary retainer ring 17 , usually of plastics or metal.
  • a temporary retainer ring 17 usually of plastics or metal.
  • An object of the present invention is to provide a tapered roller bearing in which the radially inner races do not have the conventional step discussed above, so as to avoid the above-indicated disadvantages.
  • Another object of the invention is to provide a bearing which does not need the conventional temporary retainer ring, and avoids the disadvantages associated therewith.
  • FIG. 1 is a partial axial section of a prior art tapered roller bearing
  • FIG. 2 is a partial axial section of an inner half-race formed according to the prior art
  • FIG. 3 is a partial axial section of a tapered roller bearing according to the present invention.
  • FIG. 4 is a partial axial section of an inner half-race for the bearing of FIG. 3 .
  • a tapered roller bearing comprises an outer race 14 , a pair of axially adjacent radially inner races (or half-races) 10 A and 10 B, two sets of tapered rollers 12 A, 12 B interposed between the outer race 14 and the inner races 10 A, 10 B respectively, and a pair of retainer cages 13 A, 13 B for the respective sets of rollers 12 A, 12 B.
  • Reference numerals 18 and 19 generally indicate retainer devices of known type fixed to the outer race 14 and interposed between this and each of the inner half-races 10 A, 10 B close to the outer sides of the bearing.
  • each half-race 10 A, 10 B is shaped in such a way as to have a respective groove 20 A, 20 B close to the axially inner end thereof.
  • the grooves 20 A, 20 B join the conical rolling surfaces C′ with radially outwardly projecting borders 21 A, 21 B situated at the axially inner ends of the half-races.
  • both the step 11 of FIG. 2 and the groove 16 intended to permit the engagement of the conventional temporary container ring are eliminated; this element is also eliminated as will be discussed hereinafter.
  • the cages 13 A, 13 B for retaining the rollers have respective radially inwardly projecting portions, preferably in the form of teeth or flexible tongues 22 A, 22 B.
  • the portions 23 A, 23 B of the flexible tongues of the cages facing towards the outer sides of the bearing are rounded so as to make it easier for them to ride over the raised portions 21 A, 21 B when the two sub-units constituted respectively by the rollers 12 A and cage 13 A, or rollers 12 B and cage 13 B, are pressed in opposite directions from those indicated by the arrows A and A′ to position the rollers onto the respective inner rolling tracks C′.
  • the flexible tongues snap engage into the grooves 20 A, 20 B. In this way the cages retain the rollers on the respective inner races during the handling and assembly steps which precede the assembly of each sub-unit, comprising inner-race, associated cage and rollers, into the outer race.
  • each of the two sub-units thus constituted is inserted into the outer race 14 as indicated by the arrows A and A′. Assembly of the bearing is completed by fixing the seal devices 18 and 19 onto the outer race.
  • the seal devices 18 and 19 are fixed to the outer race 14 in axial positions such that there is a predetermined small axial clearance d between each seal device and the axially outer ends 24 A, 24 B of the cages.
  • the axial clearance d is preferably in the range 0.5-2 mm and will in any case be chosen in such a way as to prevent the sub-units from becoming displaced too far outwardly (in the directions opposite those indicated by the arrows A and A′) so as to reach positions in which the rollers could accidentally escape from the bearing during the handling stages which precede the assembly of the complete bearing onto the motor vehicle.
  • the radial surface of the seal device against which the outer ends 24 A, 24 B of the cages can abut may indifferently be constituted either by a part of the metal annular insert 25 (as illustrated at the right hand side of FIG. 3) or by a part of the rubber seal 26 which is normally vulcanised onto the insert 25 (as illustrated at the left hand side of FIG. 3 ).
  • the invention is not limited to the embodiments described and illustrated here, which are to be considered as examples of the bearing; but rather the invention is capable of modifications to the shape, arrangement of parts, constructional and functional details.
  • the axial clearance d discussed above could be formed by suitably dimensioning the cages and/or the seal devices.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Rolling Contact Bearings (AREA)
  • Rolls And Other Rotary Bodies (AREA)
US09/518,332 1999-03-04 2000-03-03 Tapered bearing unit Expired - Lifetime US6491441B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT1999TO000163A IT1308406B1 (it) 1999-03-04 1999-03-04 Cuscinetto a rulli conici.
ITT099A000163 1999-03-04
ITT099A0163 1999-03-04

Publications (2)

Publication Number Publication Date
US20020054722A1 US20020054722A1 (en) 2002-05-09
US6491441B2 true US6491441B2 (en) 2002-12-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
US09/518,332 Expired - Lifetime US6491441B2 (en) 1999-03-04 2000-03-03 Tapered bearing unit

Country Status (4)

Country Link
US (1) US6491441B2 (fr)
EP (1) EP1033504B1 (fr)
DE (1) DE60022929T2 (fr)
IT (1) IT1308406B1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005018042A1 (de) * 2004-04-20 2005-11-17 Aktiebolaget Skf Kegelrollenlagereinheit und Verfahren für ihren Zusammenbau
US20060145551A1 (en) * 2004-12-30 2006-07-06 Rozlev Corp., Llc Bearing assembly having a mechanical component and using attractive magnetic forces
EP1760344A1 (fr) 2005-08-31 2007-03-07 Aktiebolaget SKF Ensemble palier pour une roue de véhicule
US20070110352A1 (en) * 2004-03-25 2007-05-17 Koyo Seiko Co., Ltd. Tapered roller bearing
US7391128B2 (en) 2004-12-30 2008-06-24 Rozlev Corp., Llc Wind generator system using attractive magnetic forces to reduce the load on the bearings
US20090085419A1 (en) * 2007-09-28 2009-04-02 James Arseneaux Hybrid touchdown bearing system
US10982730B2 (en) 2019-03-04 2021-04-20 Saint- Augustin Canada Electric Inc. Flywheel systems and related methods

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10136372A1 (de) * 2001-07-26 2003-02-13 Ina Schaeffler Kg Losradlager
SE525142C2 (sv) * 2003-05-12 2004-12-07 Volvo Lastvagnar Ab Lagerarrangemang och hjulaxelarrangemang för fordon
DE102005009980B3 (de) * 2005-03-04 2006-06-14 Aktiebolaget Skf Wälzlager
DE102005053992A1 (de) * 2005-11-10 2007-05-24 Ab Skf Wälzlagerung
DE102008063959B4 (de) * 2008-12-19 2021-03-04 Schaeffler Technologies AG & Co. KG Wälzkörperkäfig mit Abstandhalter
US9097283B2 (en) 2009-09-11 2015-08-04 The Timken Company Snap-on cage bridge for rolling element bearings
US20120321234A1 (en) * 2010-02-05 2012-12-20 Jtekt Corporation Conical bearing
DE102010047983A1 (de) * 2010-10-08 2012-04-12 Schaeffler Technologies Gmbh & Co. Kg Selbsthaltendes Kegelrollenlager
US9151328B2 (en) * 2013-10-10 2015-10-06 Jtekt Corporation Conical roller bearing
DE102013220701A1 (de) * 2013-10-14 2015-04-16 Schaeffler Technologies Gmbh & Co. Kg Vormontage eines spaltoptimierten Cliprings zwischen Innenringen eines Wälzlagers
DE102015206438A1 (de) * 2015-04-10 2016-10-13 Schaeffler Technologies AG & Co. KG Kegelrollenlager und Verfahren zur Montage des Kegelrollenlagers
DE102021108401A1 (de) 2021-04-01 2022-10-06 Schaeffler Technologies AG & Co. KG Kegelrollenlager

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US2344038A (en) 1942-04-13 1944-03-14 Charles D Griffiths Wheel and tire lock
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US3745392A (en) 1969-11-10 1973-07-10 Lucas Industries Ltd Device for measuring the frequency of rotation of a vehicle wheel
US3749450A (en) 1969-10-22 1973-07-31 Whittaker Corp Wheel adaptation means
US3857611A (en) 1970-01-21 1974-12-31 Whittaker Corp Wheel and alignment assembly
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US4043620A (en) 1976-05-26 1977-08-23 The Timken Company Rib-mounted bearing seal
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US4427242A (en) 1982-01-26 1984-01-24 Atlantic Richfield Company Unitized tapered roller bearing
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US4817775A (en) 1981-06-12 1989-04-04 Valeo Pre-assembled automotive clutch cover assembly
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EP0681185A1 (fr) 1994-05-03 1995-11-08 SKF INDUSTRIE S.p.A. Unité de mesure et d'étanchéité pour palier de roulement
EP0726468A1 (fr) 1995-02-09 1996-08-14 Skf France Dispositif de codeur pour capteur de vitesse de rotation et roulement équipé d'un tel dispositif
EP0753679A2 (fr) 1995-07-10 1997-01-15 Nsk Ltd Palier à roulement avec roue phonique
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2053478A (en) 1936-01-08 1936-09-08 Pittsburgh Serew & Bolt Corp Bolt anchorage
US2336767A (en) 1941-11-07 1943-12-14 Charles S Ash Wheel mounting means
US2344038A (en) 1942-04-13 1944-03-14 Charles D Griffiths Wheel and tire lock
US2570559A (en) 1945-12-29 1951-10-09 Elwood M Juergenson Wheel adapter plate
US2447838A (en) 1947-05-17 1948-08-24 Timken Roller Bearing Co Unit handled double row roller bearing
US2877054A (en) 1952-07-09 1959-03-10 Saab Scania Ab Wheel disk and hub assembly
US3562484A (en) 1963-06-24 1971-02-09 Trw Inc Welding cart for welding a plurality of studs to a beam flange, or other surface
US3366421A (en) 1964-07-08 1968-01-30 Budd Co Disk wheel
US3564477A (en) 1969-08-11 1971-02-16 Gen Motors Corp Conductor seal
US3749450A (en) 1969-10-22 1973-07-31 Whittaker Corp Wheel adaptation means
US3745392A (en) 1969-11-10 1973-07-10 Lucas Industries Ltd Device for measuring the frequency of rotation of a vehicle wheel
US3857611A (en) 1970-01-21 1974-12-31 Whittaker Corp Wheel and alignment assembly
US3713686A (en) 1971-01-21 1973-01-30 Abex Corp Locking plate for axle end caps
US3905173A (en) 1974-05-25 1975-09-16 Trw Inc Resistance-weldable stud
US4283091A (en) 1975-10-20 1981-08-11 Enders Max L Shock proof fastener assembly for vehicle wheels and other applications
US4043620A (en) 1976-05-26 1977-08-23 The Timken Company Rib-mounted bearing seal
US4052045A (en) 1976-07-29 1977-10-04 Billy Joe Shaddix Alignment of flanges
US4377312A (en) 1981-03-06 1983-03-22 Dana Corporation Bearing seal
US4817775A (en) 1981-06-12 1989-04-04 Valeo Pre-assembled automotive clutch cover assembly
US4502739A (en) 1981-12-01 1985-03-05 Gmn Georg Muller Nurnberg Gmbh Roller bearing seal
GB2112085A (en) 1981-12-21 1983-07-13 Kugelfischer G Schaefer & Co A single-row or double-row rolling bearing
US4427242A (en) 1982-01-26 1984-01-24 Atlantic Richfield Company Unitized tapered roller bearing
EP0156552A1 (fr) 1984-03-27 1985-10-02 Rockford Powertrain, Inc. Unité de joint universel d'étanchéité à emboîtement
US4567344A (en) 1984-08-27 1986-01-28 Michalski Jr William L Apparatus and method for welding a stud to the surface of a workpiece
US4667156A (en) 1984-09-13 1987-05-19 Nippon Seiko Kabushiki Kaisha Vehicle wheel bearing mounted pulser
DE3524063A1 (de) 1985-07-05 1987-01-08 Kugelfischer G Schaefer & Co Kegelrollenlager mit fensterkaefig
US4689958A (en) 1985-09-30 1987-09-01 Jidosha Kiki Co., Ltd. Brake booster
US4664538A (en) 1986-04-07 1987-05-12 Trw Inc. Sealed bearing assembly
JPS6343067A (ja) 1986-08-07 1988-02-24 Nok Corp 発熱性シ−ル材
US4708497A (en) 1986-11-03 1987-11-24 General Motors Corporation Unitized bearing with free molded seals
US4795278B1 (en) 1986-11-28 1992-11-03 Nippon Seiko Kk Bearing assembly
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7320550B2 (en) * 2004-03-25 2008-01-22 Jtekt Corporation Tapered roller bearing
US20070110352A1 (en) * 2004-03-25 2007-05-17 Koyo Seiko Co., Ltd. Tapered roller bearing
DE102005018042B4 (de) * 2004-04-20 2008-05-29 Aktiebolaget Skf Kegelrollenlagereinheit und Verfahren für ihren Zusammenbau
DE102005018042A1 (de) * 2004-04-20 2005-11-17 Aktiebolaget Skf Kegelrollenlagereinheit und Verfahren für ihren Zusammenbau
US20080106165A1 (en) * 2004-12-30 2008-05-08 Rozlev Corp., Llc Bearing assembly having a mechanical component and using attractive magnetic forces
US7327060B2 (en) * 2004-12-30 2008-02-05 Rozlev Corp., Llc Bearing assembly having a mechanical component and using attractive magnetic forces
US20060145551A1 (en) * 2004-12-30 2006-07-06 Rozlev Corp., Llc Bearing assembly having a mechanical component and using attractive magnetic forces
US7391128B2 (en) 2004-12-30 2008-06-24 Rozlev Corp., Llc Wind generator system using attractive magnetic forces to reduce the load on the bearings
US7466052B2 (en) 2004-12-30 2008-12-16 Rozlev Corp., Llc Bearing assembly having a mechanical component and using attractive magnetic forces
EP1760344A1 (fr) 2005-08-31 2007-03-07 Aktiebolaget SKF Ensemble palier pour une roue de véhicule
US20090085419A1 (en) * 2007-09-28 2009-04-02 James Arseneaux Hybrid touchdown bearing system
US7830055B2 (en) * 2007-09-28 2010-11-09 Beacon Power Corporation Hybrid touchdown bearing system
US10982730B2 (en) 2019-03-04 2021-04-20 Saint- Augustin Canada Electric Inc. Flywheel systems and related methods
US11680624B2 (en) 2019-03-04 2023-06-20 Saint-Augustin Canada Electric Inc. Flywheel systems

Also Published As

Publication number Publication date
EP1033504A2 (fr) 2000-09-06
IT1308406B1 (it) 2001-12-17
DE60022929D1 (de) 2006-02-16
EP1033504A3 (fr) 2001-08-16
ITTO990163A1 (it) 2000-09-04
EP1033504B1 (fr) 2005-10-05
US20020054722A1 (en) 2002-05-09
DE60022929T2 (de) 2006-03-23

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